6172RB Science a STEM approach Year 2 low res watermark

Physical sciences
FORCED TO MOVE
Assessment
Teacher notes
Science knowledge
A push or a pull affects how an object moves or changes shape (ACSSU033)
Indicators
• Identifies the type of force at work in an image—push, pull or gravity.
• Identifies the type of force needed to move an object from a starting position to a finishing
position.
• Identifies ways a person can add more force if an object is too heavy for them to move by
themselves.
• Identifies and explains how objects that float are being pushed to the surface and objects that sink
are being pulled to the bottom of the mass of water.
• Identifies the direction of a push and a pull force that is applied to objects in water, causing them to
float and sink, and draws arrows on a diagram to show the diection of each force.
Answers
Page 138
1. (a) pull
(b) gravity
(c) push
2. (a) A strong push will be needed to move the
box.
(b) Teacher check—Shaun could ask friends to
help him, ask a stronger person to move it
for him or use a simple machine, such as a
trolley to help him move the box.
3. (a) Objects that float
are being pushed
to the surface of
the water by an
invisible force.
(b) Objects that sink
are being pulled
down to the
bottom of a mass
of water by gravity.
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R.I.C. Publications® – www.ricpublications.com.au 978-1-925431-95-7 YEAR Science:
2 A STEM APPROACH 137